We visited the Dokumentationszentrum on a very cold morning, there was frost all over and we were not wanting to walk very far, fortunately with the s bahn and tram you end up right at the front door!
We really just wanted to go take pictures but ended up getting a day pass to the city museums so we thought we would check out the museum.
It was truly worth the visit. We got the English audio guides as most of the printed materiel is only in German. This museum really focuses on the rise of the NS party and the rise of Hitler. They do cover the entire NS rule from Hitler's appointment to the Nurnberg trials. And it does it in a way that really focuses on the megalomania of this man and his movement. It does not dwell on the camps and all the deaths, so it is not depressing in that sense.
It was just a good solid education on the rise and rule of a powerful dictator and an education on how easily it could happen!
I highly recommend taking a break from all of the middle age history and visit this museum!